X-Git-Url: http://nitlanguage.org

diff --git a/lib/filter_stream.nit b/lib/filter_stream.nit
index 66366c6..c5baa32 100644
--- a/lib/filter_stream.nit
+++ b/lib/filter_stream.nit
@@ -5,33 +5,28 @@
 #
 # This file is free software, which comes along with NIT.  This software is
 # distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-# without  even  the implied warranty of  MERCHANTABILITY or  FITNESS FOR A 
+# without  even  the implied warranty of  MERCHANTABILITY or  FITNESS FOR A
 # PARTICULAR PURPOSE.  You can modify it is you want,  provided this header
 # is kept unaltered, and a notification of the changes is added.
 # You  are  allowed  to  redistribute it and sell it, alone or is a part of
 # another product.
 
-class FilterIStream
-	super IStream
+class FilterReader
+	super Reader
 	# Filter readed elements
-	readable var _stream: nullable IStream
+	var stream: nullable Reader = null
 
 	redef fun eof: Bool
 	do
 		assert stream != null
 		return stream.eof
 	end
-
-	private fun stream=(i: nullable IStream)
-	do
-		_stream = i
-	end
 end
 
-class FilterOStream
-	super OStream
+class FilterWriter
+	super Writer
 	# Filter outputed elements
-	readable var _stream: nullable OStream
+	var stream: nullable Writer = null
 
 	# Can the stream be used to write
 	redef fun is_writable: Bool
@@ -39,16 +34,11 @@ class FilterOStream
 		assert stream != null
 		return stream.is_writable
 	end
-
-	private fun stream=(i: OStream)
-	do
-		_stream = i
-	end
 end
 
 class StreamCat
-	super FilterIStream
-	var _streams: Iterator[IStream]
+	super FilterReader
+	private var streams: Iterator[Reader]
 
 	redef fun eof: Bool
 	do
@@ -63,14 +53,16 @@ class StreamCat
 		end
 	end
 
-	redef fun stream: nullable IStream
+	redef fun stream: nullable Reader
 	do
-		if _stream == null and _streams.is_ok then
-			stream = _streams.item
-			assert _stream != null
+		var res = super
+		if res == null and _streams.is_ok then
+			res = _streams.item
+			stream = res
+			assert stream != null
 			_streams.next
 		end
-		return _stream
+		return res
 	end
 
 	redef fun read_char: Int
@@ -87,19 +79,19 @@ class StreamCat
 		end
 	end
 
-	init with_streams(streams: Array[IStream])
+	init with_streams(streams: Array[Reader])
 	do
 		_streams = streams.iterator
 	end
-	init(streams: IStream ...)
-	do
+
+	init(streams: Reader ...) is old_style_init do
 		_streams = streams.iterator
 	end
 end
 
 class StreamDemux
-	super FilterOStream
-	var _streams: Array[OStream]
+	super FilterWriter
+	private var streams: Array[Writer]
 
 	redef fun is_writable: Bool
 	do
@@ -116,7 +108,7 @@ class StreamDemux
 		end
 	end
 
-	redef fun write(s: String)
+	redef fun write(s: Text)
 	do
 		for i in _streams
 		do
@@ -136,13 +128,12 @@ class StreamDemux
 		end
 	end
 
-	init with_streams(streams: Array[OStream])
+	init with_streams(streams: Array[Writer])
 	do
 		_streams = streams
 	end
 
-	init(streams: OStream ...)
-	do
+	init(streams: Writer ...) is old_style_init do
 		_streams = streams
 	end
 end